Hawaii
Zip Code Listings 2016

At 10,931 square miles, Hawaii is the 8th smallest state in America. Administratively Hawaii has 51 cities and towns and five counties: Hawaii County, Honolulu County, Kalawao County, Kauai County, and Maui County. The state's population in 2012 was 1,392,313 according to the 2012 United States Census, making it the 11th least populous state in America.

As of January 2014, the state has roughly 137 zip codes, which are listed below with the respective city, town, village or location name as well as the area code. The state's capital and largest city is Honolulu (2010 population: 390,738).

Why is zip code data on an environmental science site?
In 2002 I was working on a project that correlated pollution and income for zip codes across the United States. Visitors told me the data files were very useful so I left them on the site and now update the postal information on a periodic basis even though the focus of the site is conservation.